Finding the Fourth Proportional to 458,221,284.02, 632,412,004.71 and 257,300,713.76

Step by Step Solution

1. Step 1: Write the proportion equation
   458,221,284.02 : 632,412,004.71 = 257,300,713.76 : x
2. Step 2: Convert to fraction form
   458,221,284.02/632,412,004.71 = 257,300,713.76/x
3. Step 3: Cross multiply
   458,221,284.02x = 632,412,004.71 × 257,300,713.76
4. Step 4: Simplify right side
   458,221,284.02x = 162,720,060,200,078,304
5. Step 5: Solve for x
   x = 162,720,060,200,078,304/458,221,284.02
6. Step 6: Final answer
   x = 355,112,400.65